Railway-car-truck bolster.



A. E. SMITH. RAILWAY GAR TRUGK BOLSTER. APPLICATION FILED AUG. 14, 190B.

Patented Sept. 16, 1913.

specification, such ABBAIVI E. SMITH, or isRooKLYn, nnwfromr.

RAILWA -animation :BoLs'rEn; I

Specification 61? Letters Patent.

seated se a 16, an.

Application filed August 14, 1908. seriarms. 43,626.

To all whom it may concern:

, Be it known that I, ABRAM E. SMrrH, a

citizen of the United States, residin 1H Brooklym county of: Kings, State ofew York, have invented certain new and useful Improvements in Railway-Car-Truck Bolsters; and I do declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawing, forming a part of this as will enable others skilled in the art to whichit appertains to makeand use same.

This invention relates to an improved cast railway car truck bolster.

The object of the invention is to provide a casting which will have the maximum strength in all of the component parts of the section, as the strains are eliminated in the manufacture, due to the large openings in top of said casting and to the heavy section being confined to. the bottom member only, the balance of the section being uniform throughout which permits uniformity in cooling.

Another object of theinvention is the use of a castin (which is the railway car bolster proper in combination with a rolled plate which performs the functions of a compression member and ties the sides of said casting together.

In the accompanying drawin Figure I represents a perspective view 0 this rail-' way car bolster assembled; Fig. II a cross sectional View at the center.

In the embodiment herein illustrated are three members, namely, the body 1 of the bolster, a top plate 2, and a center plate 3, which, when the members are assembled, form a complete railway car bolster ready for its intended service.

Member 1 consists of' a hollow casting which is the bolster proper, of a uniform trapezoidalsection with large openings in the toppf said casting which permit same to cool uniformly when same is being manufac-.

.tured. Said casting has two flanges projecting outward from sides for the purpose of securing top plate and center plate to said casting. The center plate support and side bearings are cast integral with the ca ting.

Member 2 is a rolledplate which when applied to the casting performs the functions of a compression member and ties the sides of the casting together.

Member 3 is a conventional type of truck center' plate.

I claim as my invention- 1. A car truck b ,lster made of a hollow casting in combination with it rolled plate which performs the function of a com ression member and tics the sides of the b0 ster together.

2. A cast car truck bolster with side bearings and center plate support cast integral with the bolster proper and 2. rolled plate and center plate applied to top of casting.

' 3. A car truck bolster, com osed of a hollow castingwith, first, paralle upright sides of uniform thickness interconnecting the top and bottom of the bolster; second, a topof like uniform thickness cut away over the gitudinally between the center bearing and the side bearings and transversely between the sides of the bolster; third, flanges formlarger part of the spaces which extend 1021- ing part of the top of the bolster which project beyond the sides of the bolster and are adapted for the attachment thereto of a top plate, and, fourth, a bottom of greater thickness than said sides and top. V

In testimony whereof, I have iereunto set' my hand, this 4th day of August 1908.

ABRAM E. SMITH.

Witnesses:

ELMO L. Gummy, ARTHUR T; :HEATH 

